Combined solid-fuel and gas bange foe



- 0. H. MILLER; COMBINED SOLID FUEL AND GAS RANGE'POR KITCHEN AND OTHERUSES.

APPLICATION FILED APR. 13, 1908.

915,987. Patented Mar.23, 1909.

mun

I O/miu UNITED STATES PATENT err-10E;

cHAR Es H. MILLER, or CLEVELAND, onio COMBINED SOLID-FUEL AND en's RANGEFOR KITCHEN lmi) OTHER Uses.

a No. 915,987.

' Specification of Letters Patent.

Patented March 23, 1909.

Application filed April 13, 1908. Serial No. 426,664.

T alt whom it may concern: 1

Be it known that 1, CHARLES H. MILLER, a citizen of the United States,residing at I -Oleveland, in the county of Cuyah'oga and 'State of Ohio,have invented certain new and useful Improvements in a Combined Solid-Fuel and Gas Range for Kitchen and other Y Uses; and do declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to improvements in .a

combined solid fuel and gas range for kitchen and other uses, allsubstantially asshown and described and particularly pointed out in theclaims. I In the accompanyung drawings, Figure- 1 1s a front perspectiveview of the range complete, with the immediate front thereof mostlybroken away to disclose the internal 7 parts and constructions. Fig. 2is a vertical line 5-5,

The range as shown 1n the drawings comsectional elevation-of the body ofthe range,

and Fig. 3 is a cross section at right angles to Fig. 2'. Fig. it-is aplan view of the base of the range on a line corresponding to, aF-x,

Fig. 3. Fi 5 is a sectional plan view on prises a body B of any suitable--form-and style and provided with the usualifirepot 2 1 at thefront,which may be adapted to burn any suitable solid fuel, such as Wood orcoal, but which is also provided with a suitable gas burner 3, designedtoserve as a substi- -tute for solid fuel when gas may be preferred.

Either-solid fuel or gas may, therefore, be

' used in the fire pot for heating the range for cooking and baking, butfor the latter purpose I provide a special gas burner, O, which may beused alonefor baking, or in connection with either hard fuel or gas inthe fire potwhen baking is done. Furthermore, the hard fuel,particularly, may be used-alone for baking, as with ranges ordinarilywhich have no gas fittin or equipment connected with: the oven. hisparticular range is, furthermore, provided with afresh airchannel orspace 5 over its entlre bottom, and has suitable inlet openings bthrough the-wall of the range from the outside, and the air flowstherefrom by openings 6. into the ash-pit c beneath the grate bars, orthrough the so" called flue strip 7, shown in section Fig.4, and sideelevation, Fig. 3, and arranged to '5 through secondary plate 8 oversaid chamber into a transverse depression or recess 10 which extendsacross the full depth of the bottom 12 of the oven from front to rearand provides .a burner chamber of limited meanscompared with the bottomof the oven be covered over flush with said bottom by the hinged plateor cover 14.- Howevenwhen the said burner C is in use, the said plate orcover 14 is open, as seen in Figs. 1 and 2, and

the products of combustion from burner C flow directly into the oven. Inthis case a false bottom orgrid member 15 is placed upon the oven bottom12 and covers the same quite completely, as seen in Figs. 2 and 3, butpermits the products .of combustion to conduct fresh air from saidbottom chamber pass into the oven about the edge thereof,

while the heat from the burner is radiated vmore or less directlythrough said bottom; plate 15 into the oven and affords an evendistribution'of the heat.

, Any suitable style of burner C may be employed, and the depression orrecess in the bottom of the oven is preferably rectangular in crosssection but might be circular or of equivalent shape; .g-If/ isimportant, however,- that whatever shape this recess may have'it shouldnot materially interfere. with the heating of the bottom 12 of the ovenwhen gas burner C is shut off and only solid fuel-is used. In such case,also, the false bottom 15 is withdrawn from the oven and thecover'or-lid 14 is closed over the burner to give-a flat bottom surfaceto the oven.

To 'thisend the said recess is relatively narrow, as compared with theentire width of bottom 12 and leaves the balance of said bottomundisturbed or as it isusually made,

and the said recess is otherwise so narrowand completely exposed to theheat beneath at issi'des and bottom that it does not materially orunfavorably affect the distribution of heat to the space coveredthereby. The damper orcover'14 also cuts off al intake of air intothe-oven from the bottom when the burner O is not being used, and inthis case the dafnper22 also is closed to prevent escape of the heatfrom the oven. But

air taken into the oven'through hollow flue stri will be heated byradiation from the wal s which, inclosc said space5-. v

It will be especially observed that the fluespaces over flue strip 7 andair conduit is of such lengthv that it'admits fresh air to approximatelythe entire length of the said burner C and thus promotes the freestpossible combustion in said burner. The portion of the burner notdirectly exposed to said strip or fine is abundantly supplied throughthe trough or recess 10 which 1s open to the said. flue. The

s ace not occupied at the end of the said fue strip indicated by daffords a passage for the products of combustion from the fire pot overthe oven and down through flue spaces G at the side and beneath the sameand thence through space d back to the smoke flue or exhaust pipe 18 atthe rear of the range, thus exposing the entire under surface of theoven to the heat with the same effect practicaliy as formerly.

The products of combustionwhich flow into the oven from burner C aredrawn up and along the sides and front of the oven and pass through theoutlet openings 20 in the false top 23 of the oven, whence they passinto fine chamber 21 and out past damor 22 into the discharge fine tothe chimney. amper 22 is preferably located and arra ed to serve as aflue strip to check direct out ow of the heat which passes upward at theleft of the oven, or in other words to provide an indirect travel of theexhaust heat over false top 23. Any suitablegas burner 3 in or over thefire pot may be employed, and one or more of such burners may be used asmay be deemed desirable. usual direct damper 24 at the top of the rangeis shown, and this may be closed when only the oven burner G is beingused. Ob-

" viously, a sliding damper or cover may he usedin place of hingedmember 14- or one that may be bodily placed in position and IBIHUVGd.through the oven door 16.

Damper 22 may be substituted by a fixed flue strip over false top 23, asI find in actual use of the stove, as herein described and constructed,that perfect baking is obtained within the oven even though the outletfrom chamber 2]. is constantly open and hard fuel is the sole source ofthe heat. l'lowcvcr, an adjustable damper having a suitable controllinghandle 24 is preferred as the same provides regulation when either orboth kinds of fuel are being used.

One advantage in locating gas burner C in the bottom of oven D,is thatthe burner cannot become clogged'by soot or become inop- The erativeWhen-coal or hard fuel is being used,-

because the wasteproducts of the hard fuel must pass out of the rangethrough-channels of their own which are distinct and separate from thefines and chambers whichha've to do with gas burner C. The outlet ,forthe waste products from the ovenis preferably located at the top'of theoven in line with the natural draft therefrom to the end that the ovenitself is and always will be free and clear of the products ofcombustion from the fire pot although both the fire pot and oven burnerbe placed in use at the same time. Again, the gas burners --3 which areshown in fire pot 2 are also adapted to be used to heat cookinglor othervessels-or uten sils upon the stove at the top thereof, and because .ofthe construction shown the heated. products of combustion from saidburners will pass around the oven and contribute to the heating of thesame'with the practical purposes, and when solid j may be applied tocombine with the oven burner, and fines as arranged and described hereinso that gas may be used either at the fire pot or at the oven or at bothplaces, or gas and solid fuel maybe used together, that is, solid fuelin the fire pot and gas within the oven, the two combining to givetheir-heat to the even without in any way affecting their respectiveindependent operations at their place of being.

What I claim is 1. A combined solid fuel and gas range having an ovenand heat fluos about the oven, and the oven provided with trough shapeddepression in its bottom from front to rear across its center, a burnerin said depression and a combined flue strip and air conduit discharging into said depression and sub-dividing the heatflue partway atthe bottom of the oven, and an exhaust flue open to said heat flue.

2. A range having an oven with a trough shaped depression across itsmiddle from the front to the rear of the oven and an air inlet space inthe bottom of the range over the bottom plate thereof, in combinationwith gas burner in said depression substantially the full lengththereof, aspreader plate over said burner and raised above the bottom ofthe oven, and a hollow flue strip extending lengthwise with saiddepression and open thereto along its .top and to said air, space in therange at its bottom and subdividing the heat fine at the bottom ofthe'oven pa'rt- Way from rear'to front.

V I 3. A range haw'ing .an oven and a heat pression and bnrner closingthe-bottom of the 10 space beneath the same, the oven being rooven.

videdwith a depression centrally at its ot- 'lntestimony whereof I signthis specificagqm, afid a1:i air suppl cgndlit' o'pfin from tionin thepresence of two witnesses. eneat sai s ace an ivi in t esame .into twoflues, a'hereby the heate d gasesar'e t CHARLES MILLER caused tetrav'elforward and back under the Witnesses:

oven,'in{ combination With a gas burner R. B. Mosnn,

said'de'pression and a plate over said -de- E. M. FISHER.

